Radiation Releases from Hanford
‚Äčto the Columbia River

Columbia River Pathway Analysis

Oak Ridge Center for Risk Analysis [formerly SENES Oak Ridge, Inc.] carried out a reevaluation of dose estimates for exposures to radionuclides released from the Hanford Reservation to the Columbia River for the Agency for Toxic Substances and Disease Registry. Through examination of historical documents and recent summary reports, SENES identified potential sources of bias in the dose estimates prepared during the Hanford Environmental Dose Reconstruction Project. In addition, SENES prepared revised dose estimates and corresponding risk estimates for people consuming fish and waterfowl from the Columbia River. These results were intended for use in establishing the need for medical monitoring in potentially exposed populations.